https://arxiv.org/abs/2406.07853
*Authors* Jessica S. Wan, John T. Fasullo, Nan Rosenbloom, Chih-Chieh Jack Chen, Katharine Ricke *12 June 2024* *Abstract* Many record-breaking climate extremes arise from both greenhouse gas-induced warming and natural climate variability. Marine cloud brightening, a solar geoengineering strategy originally proposed to reduce long-term warming, could potentially mitigate extreme events by instead targeting seasonal phenomena, such as El Niño-Southern Oscillation (ENSO). By exploiting the 2019-2020 Australian wildfire experiment-of-opportunity, we show that simulated marine cloud brightening in the southeast Pacific reproduces observed cloud changes and induces La Niña-like responses. We then explore how cloud brightening timing and duration modifies the 1997-1998 and 2015-2016 El Niño events. We find the earliest and longest interventions effectively restore neutral ENSO conditions and dampen El Niño's impacts. Solar geoengineering that targets climate variability could complement tools such as ENSO forecasting and provide a pathway for climate risk mitigation. *Source: ArXiv* -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CAHJsh9_6SLZ%3DnYuFSy8%2BdHTDZMhc1TzYBS1%3Dmwamn3cGOkR61A%40mail.gmail.com.
